package thread;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

class MyThreadPoolExecutor {
    private final List<Thread> threadList = new ArrayList<>();

    private BlockingQueue<Runnable> queue = new ArrayBlockingQueue<>(1000);
    //n来指定创多少的线程
    public MyThreadPoolExecutor(int n) {
        for(int i = 0; i<n; i++) {
            Thread t = new Thread(()-> {
                //线程要做的事情是把任务队列中的任务不停的取出来,并且去执行
                while(true) {
                    try {
                        //此处的take带有阻塞功能, 如果队列为空, 此处就阻塞
                        Runnable runnable = queue.take();
                        //取出一个任务就执行一个任务即可
                        runnable.run();
                    }catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            });
            t.start();
            threadList.add(t);
        }
    }

    public void submit(Runnable runnable) throws InterruptedException {
        queue.put(runnable);
    }
}
public class ThreadDemo33 {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPoolExecutor executor = new MyThreadPoolExecutor(4);
        for (int i = 0; i < 1000; i++) {
            int n = i;
            executor.submit(new Runnable() {
                @Override
                public void run() {
                    System.out.println("执行任务" + n + ", 当前线程为:" + Thread.currentThread().getName());
                }
            });
        }
    }
}
